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| author | NeilBrown <neilb@suse.de> | 2006-07-10 04:44:19 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-10 13:24:17 -0700 |
| commit | 67463acb646904d76a8e237cc31eaa87872f30cc (patch) | |
| tree | 4ccf373165581ed898328ca03365abfdd7d23a04 /drivers/md/md.c | |
| parent | 80ca3a44f563a763fa872390dcb393f2d82027bf (diff) | |
| download | linux-3.10-67463acb646904d76a8e237cc31eaa87872f30cc.tar.gz linux-3.10-67463acb646904d76a8e237cc31eaa87872f30cc.tar.bz2 linux-3.10-67463acb646904d76a8e237cc31eaa87872f30cc.zip | |
[PATCH] md: require CAP_SYS_ADMIN for (re-)configuring md devices via sysfs
The ioctl requires CAP_SYS_ADMIN, so sysfs should too. Note that we don't
require CAP_SYS_ADMIN for reading attributes even though the ioctl does.
There is no reason to limit the read access, and much of the information is
already available via /proc/mdstat
Cc: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md/md.c')
| -rw-r--r-- | drivers/md/md.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/md/md.c b/drivers/md/md.c index c0da5eedc24..a5286beddcf 100644 --- a/drivers/md/md.c +++ b/drivers/md/md.c @@ -1926,6 +1926,8 @@ rdev_attr_store(struct kobject *kobj, struct attribute *attr, if (!entry->store) return -EIO; + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; return entry->store(rdev, page, length); } @@ -2859,6 +2861,8 @@ md_attr_store(struct kobject *kobj, struct attribute *attr, if (!entry->store) return -EIO; + if (!capable(CAP_SYS_ADMIN)) + return -EACCES; rv = mddev_lock(mddev); if (!rv) { rv = entry->store(mddev, page, length); |